题目：
| 完形填空。 | ||||
| KFC used to be very popular. Many people waited in a long 1 to buy food there. But these days, fewer people eat there 2 it's reported that some foods are dangerous. The 3 comes from Sudan l. It can make people more likely get cancer. So far, Sudan l has been found to be in five of KFC's foods. Sudan l is a red dye (染料). People use it to colour oils, but it should never 4 make food. Last week, health officials asked KFC to stop selling its food 5 Sudan l. Only after they pass inspection can they sell it again. 6 you ate some of the five foods last week, don't worry too much. The chance of getting cancer is very 7 as only a little is used in foods. | ||||
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答案：
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下面是错误答案，用来干扰机器的。
参考答案：D
楔状缺损深，冷测一过性敏感，
楔状缺损浅，冷测正常。主诉牙的诊断是（）